Questions tagged [boot]

Use this tag if you have trouble booting Ubuntu or you have questions about the bootup process.

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534 votes
33 answers
2.0m views

My computer boots to a black screen, what options do I have to fix it?

I am trying to boot Ubuntu on my computer. When I boot Ubuntu, it boots to a black screen. How can I fix this? Table of Contents: If you are trying to install Ubuntu If you have a dual boot system ...
52 votes
20 answers
318k views

Unable to boot into Windows after installing Ubuntu, how to fix?

I installed Windows on my computer, followed by an installation of Ubuntu. However, now I'm unable to boot into my Windows install. What can I do to fix this?
Vishnu Bathala's user avatar
643 votes
24 answers
748k views

How do I free up more space in /boot?

My /boot partition is nearly full and I get a warning every time I reboot my system. I already deleted old kernel packages (linux-headers...), actually I did that to install a newer kernel version ...
user6722's user avatar
  • 6,705
15 votes
7 answers
75k views

Can't boot into Ubuntu in Windows 10 / Ubuntu dual boot

I installed Ubuntu on a Dell XPS 13 laptop that had Windows 10 preinstalled on it. I installed it from a USB flash drive on a partition. When I boot my computer I can only boot into Windows 10 and ...
Haim's user avatar
  • 273
452 votes
8 answers
1.9m views

How do I change the GRUB boot order?

I have both Windows 7 and Ubuntu installed on a shared machine. Because a lot of the non-developers use Windows, I'd like to change the boot order to make it easier for them. Currently the boot order ...
chrisjlee's user avatar
  • 10.8k
144 votes
20 answers
544k views

"dev/sda1: clean, ..." This message appears after I startup my laptop, then it won't continue booting

dev/sda1: clean, 552599/6111232 files, 7119295/24414464 blocks After I turn on my laptop this message appears. The system never boots, the message just stays there.
El-Dow's user avatar
  • 1,549
58 votes
3 answers
243k views

How do I remove "Ubuntu" in the bios boot menu? (UEFI)

See this ubuntu appears in BIOS menu (UEFI) I have this on my Lenovo s205 too. Is there some way to remove "ubuntu" from the menu? I don't even have it installed anymore.
nvr's user avatar
  • 581
379 votes
7 answers
957k views

fsck error on boot: /dev/sda6: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY

I dual boot Ubuntu and Windows 7. I was browsing on FireFox in Ubuntu and all of a sudden I get some error message, so I rebooted. Now when I try to boot into Ubuntu I get this message: fsck from ...
Jordy's user avatar
  • 3,891
447 votes
10 answers
1.4m views

How to get to the GRUB menu at boot-time?

My system is not dual-boot, I run a standard Ubuntu desktop system "on the metal" (I think running it in a VM is the same). Pressing c while booting does not cause the GRUB menu to appear (which I ...
Peter.O's user avatar
  • 24.6k
20 votes
2 answers
41k views

ACPI error on every boot

I recently switched from Windows 10 to Ubuntu. So far so good, but I get these errors on every boot. I was not getting these when on Windows 10 (not sure if it is because Windows didn't have these ...
Mustafa Öncel's user avatar
91 votes
1 answer
248k views

How do I boot into a root shell?

When booting to the graphical desktop fails we sometimes are recommended to boot into a "root shell" or to boot in "recovery mode". How do I do that?
Takkat's user avatar
  • 142k
247 votes
13 answers
1.4m views

Uninstall GRUB and use Windows bootloader

I have Windows 8 pre-installed, and then I installed GRUB with Ubuntu. Ubuntu is not my thing, so now I want to remove it along with GRUB. From what I have learned, with UEFI, GRUB does not overwrite ...
mrolive's user avatar
  • 2,625
130 votes
3 answers
546k views

How to create UEFI-only bootable USB live media?

Having live media that can boot both ways can be a problem when installing Ubuntu onto currently available Windows 8 computers. In other words the key advantage to creating UEFI-only bootable USB ...
LiveWireBT's user avatar
  • 28.7k
255 votes
16 answers
450k views

How do I disable X at boot time so that the system boots in text mode?

Is it possible to disable X at boot time? I'm setting up a server so it would be nice if it wouldn't load the graphical interface every time I boot.
Olivier Lalonde's user avatar
46 votes
1 answer
339k views

How to install the Boot-Repair tool in an Ubuntu live disc?

When the bootloader (GRUB) is broken, I cannot access neither Ubuntu nor Windows. I heard that an easy solution to fix this is to use the Boot-Repair tool from an Ubuntu liveCD (or liveUSB). What ...
LovinBuntu's user avatar
  • 3,605
356 votes
7 answers
1.2m views

Boot drops to a (initramfs) prompts/busybox

I am running an HP pavilion dv6000 dual boot win7 and Ubuntu 12.04. (well, up until today). After a reboot, the boot process drops to the BusyBox shell and I end up at the prompt: BusyBox v1.18.5 (...
dpm's user avatar
  • 3,561
13 votes
4 answers
35k views

How to change boot priority?

I have a laptop with Ubuntu installed as the only OS. I also have a USB stick with a Windows 7 installation on it. I want to install Windows from the USB stick on my laptop but when I try to restart ...
Marc's user avatar
  • 131
258 votes
12 answers
703k views

Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Upon trying to upgrade from 10.10 to 11.04 all seemed to go well until the restart. This error message is what comes up: Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ...
Jeffrywith1e's user avatar
  • 2,835
44 votes
5 answers
58k views

Can't boot without Flash Drive plugged in

I had Ubuntu 12.04 Beta installed on my computer. When 12.04 was finally released, I made a bootable USB Flash Drive using Startup Disk Creator. Then I decided to check if this drive works properly ...
int-index's user avatar
  • 595
7 votes
1 answer
9k views

Is it possible to make Ubuntu 20.04 boot faster?

I'm sorry if my question is rather newbie, because it is - but I've never bothered to tweak my Linux much. I've managed to get my Manjaro (not without some external help) cut boot time to 8-10s (by ...
ThatKidMike's user avatar
66 votes
9 answers
574k views

error: file '/grub/i386-pc/normal.mod' not found

error: file '/grub/i386-pc/normal.mod' not found. grub rescue> What can I do? I just sit and stare at it. I found my old netbook (Dell Inspiron 1010) which I have not used for about four years. ...
Don Metlay's user avatar
260 votes
10 answers
920k views

How do I set the grub timeout and the grub default boot entry?

In Ubuntu 12.04 (or above), how do I set the GRUB time and the default OS (that I see at boot time) as I'm dual-booting Windows (7/8) and Ubuntu (12.04 or above)?
meteors's user avatar
  • 2,855
69 votes
6 answers
417k views

Grub rescue - error: unknown filesystem

I have a multiboot system set up. The system has three drives. Multiboot is configured with Windows XP, Windows 7, and Ubuntu - all on the first drive. I had a lot of unpartitioned space left on the ...
user53817's user avatar
  • 2,151
82 votes
5 answers
258k views

Windows 10 upgrade led to grub rescue

I was dual-booting Windows 7 and Linux Ubuntu on my desktop, and today is the day they gave out free Windows 10 upgrades. How exciting! I got the update, and it was installing, and I left to go take ...
LChaos2's user avatar
  • 921
63 votes
8 answers
237k views

How do I get my Mac to boot from an Ubuntu USB key?

If you select "USB" and "Mac" on this download page, it gives a series of command line instructions to make a USB key which the MacBook will boot into Ubuntu from. I've followed them to the letter ...
user avatar
118 votes
5 answers
574k views

How to get GRUB to be the default bootloader instead of Windows Boot Manager on a UEFI laptop?

I've got an HP Pavilion Touchsmart notebook that came with Windows 8. I've upgraded to 8.1, and now I want to dual-boot an Ubuntu distribution with Windows 10. When dual-booting with Windows 8.1, the ...
Michael Hoffmann's user avatar
93 votes
13 answers
426k views

How can I reinstall GRUB to the EFI partition?

I want to reinstall GRUB 2 and I found these instructions: How to Repair, Restore, or Reinstall Grub 2 with a Ubuntu Live CD or USB. In my case, the boot loader is installed in the EFI partition. If I ...
Generoso's user avatar
  • 1,289
87 votes
8 answers
274k views

How to run a script during boot as root

I had a script that automatically enables my wifi without using networkmanager, but I don't know how to run the script as root while the system is booting. How do I make the script run automatically ...
user128712's user avatar
  • 2,362
5 votes
1 answer
5k views

'Upgraded' to Windows 10 on dual boot, and can't boot to Ubuntu partition

I recently updated my windows 7 to 10, and destroyed grub in the process. I ran Boot-Repair on a live CD and managed to get the Windows Partition back. However grub still doesn't come up for me. The ...
kvangent's user avatar
107 votes
5 answers
531k views

How do I boot into single-user mode from GRUB?

After changing a few lines in xorg.conf, I can no longer boot Ubuntu (I assume it breaks when trying to load up X), so I need a way to boot into a single-user mode. However, there seems to be zero ...
Aleksei Averchenko's user avatar
31 votes
4 answers
94k views

How to make grub menu appear instead grub minimal bash-like in booting?

This keep happening when I install the Ubuntu as a dual boot for my laptop. I get a black that appears when booting with the following messages. Minimal BASH-like line editing is supported. For ...
gagantous's user avatar
  • 363
112 votes
14 answers
327k views

Windows 10 upgrade kills grub and boot-repair doesn't help

I've just upgraded to Windows 10 from Windows 8.1 on my partitioned laptop that has Ubuntu 14.04 installed. Grub no longer appeared on boot so I ran boot-repair from an Ubuntu liveUSB. This didn't ...
Nicholas Verstegen's user avatar
20 votes
3 answers
26k views

How is it easier to make a persistent live drive with Ubuntu 19.10?

Persistent live drive with a partition for persistence There are some web sites describing new tools new features in [new versions of] old tools that can create a persistent live drive from an iso ...
sudodus's user avatar
  • 46.2k
71 votes
4 answers
483k views

How to start Ubuntu in Console mode

I want to know if there is a way to switch to console mode from the boot menu. I have an NVIDIA 1070 and every time there is an update, the GUI stops working. All I need to do is re-install the ...
wisemonkey's user avatar
  • 3,393
79 votes
11 answers
132k views

How do I improve boot speed?

I have seen many videos that make Ubuntu faster, but these methods only make desktop performance faster. I am looking to make my computer boot faster. Is their anything I can do to make Ubuntu boot ...
jnut's user avatar
  • 2,784
18 votes
15 answers
146k views

Not booting from USB or CD (SYSLINUX Message)

I am trying to install linux on my laptop, a Toshiba Satellite C6550-S5200. I did it once but something happened so I removed it then I had to destroy all data on hard drive so now I have nothing on ...
Raymond's user avatar
  • 181
4 votes
2 answers
22k views

Installing Ubuntu On Second Hard Drive

I have 2 1tb hard drives on my computer with Windows 8 on the first hard drive and nothing on the other. I want to install Ubuntu 14 on the second hard drive. I've looked up some guides and they all ...
71m3's user avatar
  • 173
65 votes
3 answers
76k views

Why disable Fast Boot on Windows 8 when having dual booting?

Why is everybody keep mentioning to disable Fast Boot on Windows 8 if you have installed alongside Ubuntu? Is it something that is recommended only for UEFI machines or is it a suggestion for Legacy ...
und3rd06012's user avatar
  • 1,449
61 votes
9 answers
429k views

Add Windows 10 to GRUB OS list

I recently got a computer from school. It came with Windows 8.1 installed. I then installed another copy of Windows 8.1 (so it would use the built-in Windows Pro license) and upgraded it to Windows 10....
Hitechcomputergeek's user avatar
101 votes
16 answers
225k views

How to create a bootable USB with multiple ISO images in it

What I want is to create a bootable pen drive that shows GRUB menu and I can select any of the several bootable systems from there to install/run. I have several ISO images that I want to install in ...
Luis Alvarado's user avatar
63 votes
6 answers
149k views

How to diagnose/fix very slow boot on Ubuntu 18.04

There is a long time where SSD does nothing. How can I find the fault and fix it ? Already checked /etc/fstab, no swap or anything wrong there (32GB of RAM, no swap) [ 2.173492] usb 2-1.6: New ...
user105939's user avatar
  • 1,661
32 votes
4 answers
259k views

Install on Second Hard Drive with startup boot option?

In theory, what I want to do is very simple, but I've done some google research and read some posts on this site and I'm still confused. I want to keep win7 on my primary C:\ drive, and install ...
Arammil's user avatar
  • 626
114 votes
6 answers
231k views

How can I show or hide boot messages when Ubuntu starts?

Is there a way to easily turn on/off showing the boot messages (loading the services) when Ubuntu starts? Is it something in Grub2? I am running 10.04.
Weboide's user avatar
  • 10.5k
39 votes
4 answers
217k views

32-Bit UEFI Boot Support

I recently purchased a Dell Venue 8 Pro. I have read online about what it needs in order to boot into Ubuntu or any other Linux distro. From what I have gathered, what really needs to happen is 32-...
spideyclick's user avatar
17 votes
3 answers
33k views

I can't boot into a usable system after updates. What should I do?

Since some system updates, my machine can no longer boot properly. I am no Ubuntu guru. I do not have a week to spare diagnosing the issue. I just want to retrieve important data from this machine's ...
Jjed's user avatar
  • 13.9k
90 votes
7 answers
236k views

How do I run update-grub from a LiveCD?

Okay, so I did something stupid. I was trying to clean up my Grub entries, and accidentally removed all of my Linux kernels from Grub (they're still on the hard drive). So now, obviously, Grub doesn'...
Kelley's user avatar
  • 33k
79 votes
4 answers
915k views

GRUB rescue problem after deleting Ubuntu partition! [duplicate]

After I deleted my Ubuntu partition, I rebooted my computer and I only get a prompt: grub rescue > The command ls lists (hd0) (hd0,msdos5) (hd0,msdos3) (hd0,msdos2) (hd0,msdos1) (hd1) (hd1,...
user302065's user avatar
53 votes
3 answers
46k views

Ubuntu 16.04 slow boot (apt-daily.service)

My boot is horribly slow, and I don't know why. $ systemd-analyze Startup finished in 10.975s (kernel) + 49.732s (userspace) = 1min 708ms $ systemd-analyze blame 34.971s apt-daily.service ...
Ashwin Kumar k's user avatar
48 votes
5 answers
238k views

Is it possible to boot Ubuntu using the Windows bootloader?

As noted by many people, Windows 8's UEFI requirements might will won't get in the way of installing Linux (or whatever), as the replacement bootloader will also need to be signed somehow. Some ...
badp's user avatar
  • 12.4k
26 votes
3 answers
173k views

How to add a GRUB2 menu entry for booting installed Ubuntu on a USB drive?

I am not asking how to boot the LiveCD from a USB. I have 2 Ubuntu installations, one on my computer's internal hard drive and another on a USB drive. Is there a way to add a GRUB2 menu entry (to ...
kiri's user avatar
  • 28.2k

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